Walking doll



June 96 8 v v P. J. KELLY ETAL WALK I NG DOLL 3 Sheets-Sheet 1 FiledOct. 22. 1965 FIG.

m. Yl 1 o I m M M vwm m m MA ma ATTORNEYS June 4, 1968 P. .1. KELLY ETAL3,386,201

WALKING DOLL- Filed Oct. 22, 19 65 s Sheets-Sheet 2 FIG. 6 FIG. 7.

INVENTOR 36 PATRICK J. KELLY ATTORNEYS ALLAN R. LOSSIUS June 4, 1968 P.J. KELLY ETAL 3,386,201

' WALKING DOLL Filed Oct. 22, 1965 s Sheets-Sheet s ZNVENTORS PATRICK J.KELLY ALLAN R'. LOSSIUS AT TOR N E YS United States Patent 3,336,201WALKING DOLL Patrick J. Kelly, 2579 38th Ave., San Francisco, Calif.

M116, and Allan R. Lossius, 2165 Crestmoore Drive, San Bruno, Calif.94066 Continuation-impart of application Ser. No. 304,838,

Aug. 27, 1963. This application Oct. 22, 1965, Ser.

4 Claims. (Cl. 46-149) This invention relates to a walking device and isa continuation-in-part of applicants prior application, Ser. No.304,838, filed Aug. 27, 1963, and since abandoned. The invention has forOne of its objects the provision of a device having legs supportedthereon for movement in simulation of walking when the device is held ina position for frictional engagement of the lower ends of said legs on asupporting surface and is moved forwardly.

Heretofore devices, such as dolls or figures representing human beings,have been designed with movable legs intended to swing alternately insimulation of a walking movement, but the body supporting the legs mustbe swung from side to side so that the leg moving forwardly andoppositely to the other leg will clear the ground. The manipulationnecessary to effect this walking movement is diflicult for manychildren, and in any event, the movement of the doll is an ungracefulwaddle, rather than the natural stride of a walker.

One of the objects of the present invention is the provision of awalking device having a body and at least two legs that are adapted toautomatically swing with a natural walking stride when the body is heldby a hand of the operator and is moved forwardly, and in which devicethe foot on the forwardly moving leg clears the ground without requiringany special manipulation of the body of the device.

Another object of the invention is the provision of a walking doll madein simulation of a human being, that is simple and economical to make,and which legs are adapted to move to simulate natural strides withoutinterference of the ground with either foot, and without othermanipulation of the doll than to move the body forwardly with the footof the advanced leg on the ground in frictional engagement with thelatter during substantially the entire rearward movement of the leg fromits advanced position.

An added object of the invention is the provision of a walking doll madein simulation of a human being that is not only adapted to simulatewalking, when moved over a supporting surface in engagement therewith,but the legs are constructed and arranged so that the legs will readilysupport the doll in a seated position on such surface.

Yet another object of this invention is the provision of a walkingmechanism for a doll whereby the legs of said doll can be independentlymoved for acrobatics and wherein the length of the Walking stride isvariable in length.

Other objects and advantages will appear in the description and in thedrawings.

In the drawings:

FIG. 1 is an elevational view of a walking doll as the latter may appearwhen the body is clothed and in which one foot is on the floor at thecommencement of a stride while the other is elevated preparatory toswinging forward.

FIG. 2 is a fragmentary, front elevational view showing part of the bodyand the upper portions of the legs, and the connections between the legsand the rest.

FIG. 3 is a perspective view of the portion carrying the legs, with thelegs themselves omitted, but showing the members that are rigidlyconnected therewith as seen in FIG. 2.

FIG. 4 is a semidiagrammatic side elevation view illustrating theprogressive positions of one of the legs in a walking operation, andwhich positions are alternately duplicated by the other leg.

FIG. 5 is a side elevational view showing one leg and the body portionthat is connected therewith when the doll is in a seated position on thefloor or on any suitable supporting surface.

FIG. 6 is a fragmentary, part sectional and part elevational viewshowing leg structure.

FIG. 7 is a side elevational view of the portion shown in FIG. 6.

FIG. 8 is a fragmentary, side elevational view of a modification of theleg connecting means that is slightly different from the connectingmeans of FIG. 3

FIG. 9 is a greatly reduced, side elevational view of a four-leggedanimal embodying a modification of the invention of FIG. 2.

FIG. 10 is a semidiagrarnmatic view illustrating one of the positions ofthe leg actuating mechanism of FIG. 9.

FIG. 11 is an enlarged crosssectional view taken generally along line1111 of FIG. 9.

FIG. 12 is an isometric view of a modified form of walking mechanism.

FIG. 13 is an elevational view of the right side of the mechanism ofFIG. 12 showing the rear leg in a kicking position.

FIG. 14 is an elevational view of another modification of the walkingmechanism of this invention.

In detail, the doll, generally designated 1, (FIG. 1) is made tosimulate a small girl, and insofar as all outward appearances areconcerned, the doll may look like any other doll. In the presentinstance, the legs 2, 3 are movably connected to the body of the dolland will take realistic walking strides when the sole of the foot orshoe of leg 2 frictionally engages the ground and the doll is pushed ormoved forwardly. The walking mechanism, under the influence of the powerapplied to cause said forward movement, will act to swing the other leg3 upwardly and then forwardly as the leg 2 moves rearwardly relative tothe body.

The lower portion of the body of the doll is generally designated 4(FIGS. 2, 5), and this portion is formed with a downwardly openingrecess 5 in the upper side of which a socket 6 opens in a downwarddirection. The leg carrying member 7 (FIG. 3) is adapted to fit in saidrecess with the upward projection 8 on said member fitted in the socket6. A pin 11 is adapted to extend through the body portion and projection8 to firmly, but releasably, hold the leg carrying member 7 to the body.

In the description and claims, wherever the words forward, forwardly,front, rear and words of similar connotation are used, they are usedwith reference to the front or rear side of the doll; the forward sidebeing the front side.

Referring to FIG. 3 the leg carrying member 7 is formed with fiat,opposite lateral sides, and adjacent to the forward edge of the memberare corresponding lateral projections 9 terminating in lower edges thatare preferably substantially even with the lower forward edge 12 ofrecess 5 ((FIG. 2). Along the rear edge of the members are correspondinglateral projections 13. One function these projections perform is toengage the opposite lateral inner faces of the recess 5 so that themember 7 will be equally spaced from the opposedly facing surfaces ofthe sides of said recess.

The forward lower edge 12 of recess 5 terminates substantially higherthan the lower rear edge and the lower lateral sides of the recess.

The flat opposite sides of member 7 between the forward projections 9and the rear projections 13 are formed with circular, correspondingcoaxial recess 14 of equal depth, having a web 15 between them (FIG. 3).

The central web 15 is centrally apertured to provide a bearing for acrank shaft 16 (FIG. 2) having oppositely disposed crank arms 17, 18 atopposite ends thereof disposed within recesses 14, (FIG. 3) and whicharms are respectively formed with crank pins 19, 20 (FIG. 2) thatproject oppositely outwardly of the pair of recesses 14.

Crank pins 19, 20 respectively extend into openings in the upper ends ofleg supports 21, 22 that are rigidly connected with legs 2, 3,respectively.

Leg supports 21, 22 provide means for connecting the legs to the body ofthe doll through the cranks on crank shaft 16, and these supports arepreferably fiat sided at their upper ends with their flat sides parallelwith the flat opposite outer sides of the leg carrying member 7 a andwith the opposed inner lateral surfaces of the recess 5. Thus the legswill not rotate about their longitudinal axes, but are free to rotaterelative to the axes of the crank pins 19, 20 in planes parallel withthe flat opposite sides of member 7.

The upper and laterally outermost portions of the pair of legs 2, 3project upwardly, as at 24 (FIG. 2) to extend over the lowermostportions of the body, and their outer surface contours are preferablyconvexly curved to simulate the natural appearance of the legs of thefigure that the doll represents. These leg supports 21, 22 of the dollrepresented in FIG. 1 project upwardly from the adjacent sides of thepair of legs, and the outer lateral surfaces of the lower portion of thebody, which are lapped by portions 24, are preferably substantiallycomplementary in cross-sectional contour, and are relatively close tothe adjacent surfaces of the portions 24.

Secured to the leg carrying member 7 and extending transversely throughthe latter parallel with crank shaft 16 and above the level of thelatter is a rod 25 (FIG. 2) i having end portions 26 (FIG. 3) thatproject oppositely outwardly of the lateral fiat surfaces of said legcarrying member.

The upper portions of leg supports 21, 22 are the same, and each isformed with an arcuately extending forward cam surface 27 that extendsbehind the projections 26 of rod 25 and that are adapted to slidablyengage said projections.

As seen in FIG. 2, the opposed lateral sides of the recess 5 extend overthe outer ends of the crank pins 19, 20 and over the outer ends ofprojections 26. Thus the legs cannot come off the projections, and thecam surfaces 27 will always be in a position to engage the projections26 during walking movement of the doll.

The relationship between the crank and the projections 26 determines thecharacter of the stride taken by the legs during a walking movement,such as a longer or shorter stride, and, of course, the throw of thecranks also effects the stride. These relationships may be varied tosuit the circumstances.

FIG. 4 diagrammatically illustrates the movement of one of the legs in awalking operation. Since the crank pins are opposite to each other andthe cam surfaces 27 are the same, and inasmuch as the projections 26 arethe same at opposite sides of the doll, it is obvious that FIG. 4

could represent the movement of either of the legs. However, due to theoppositely offset crank pins, the legs at opposite sides of'the bodywill move oppositely. That is, when one leg is carried upwardly by thecrank pin, the other will be lowered, and when one moves forwardly, theother will move rearwardly. For example, the two full line positions 28,29 (FIG. 4) substantially correspond to the positions of legs 2, 3 ofFIG. 1, and it will be seen that the crank pin is substantially atopposite sides of the center of the circular recess 14. In position 29the crank pin 20 is near the uppermost point in its arc, while in.position 28 it is approaching its lowermost position, the revolution ofsaid crank pin being counterclockwise as seen in FIG. 4.

In describing the walking operation, in FIG. 4 the sole 30 of the leg 2has just moved into contact with the floor 32, and has moved slightlyrearwardly relative to the body thereby rotating the crank to causecrank pin 20 (FIG. 4) to move upwardly and to thereby lift the foot ofleg 301T the floor. Upon moving the doll forwardly while the sole 30 onleg 2 is in frictional engagement with the floor, the cam surface 27 onthe leg support will be against the stationary control projection 26which will result in the transmission of the forwardly moving force tothe crank pin 20 to rotate the crank and to carry the leg 3 upwardly asthe pin 20 moves upwardly, and as soon as the sole of the foot on leg 3is free to swing forwardly along the line 33 and it is the engagementbetween the stationary projection 26 and cam surface 27 that causes thelower end of the leg or the foot to follow line 33. The dot-dash lineposition 34 of leg 3 is one in which the foot of leg 2 would still be inengagement with floor 32, but leg 3, now in position 34, has almostreached the point where the foot will move downwardly generally alongline 36 to the position 28 of leg 2 in FIG. 1 and, as soon as thisoccurs, the tip of the toe of the leg 2 (which will then be approachingthe full line position 29 of leg 3) will be ready to leave the ground,and it will leave the ground to move to and past position 29 as leg 3moves to position 28 and dot-dash line position 35.

The movement of the elevated leg from its forward position 34 in whichthe sole of the foot is above the ground to a position along line 36into engagement with the floor is relatively fast and, immediately uponthe sole engaging the floor, the rearward leg will quickly be elevatedto position 29, so that is no point where there is any sliding of thefeet on the floor.

The soles 30 of the feet or footwear are preferably slightly convex incross-sectional contour, lengthwise of the foot, so it will roll overthe surface of the floor about an arc having its center approximately atthe crank pin as the doll is moved forwardly, and this sole may have afriction surface so as to resist sliding on a polished surface.

One of the advantages of the doll that is illustrated and described isthat it may be readiy sleated on the floor, since there is nothing toprevent the lower ends of the legs from swinging forwardly to theposition shown in FIG. 5. The lower, forward edge 12 of the body of thedoll limits the forward swinging of the body of the doll relative to thelegs to a position in which the body of the doll is upright, and thiswill result in said edge engaging the forward edge of the elevated legsupport, which in FIG. 5 is the support 22, and rotating the crank sothat pin 20 is lowermost, relative to crank pin 19. Pin 20 is forcedinto this lowermost position by the camming action of edge 27 of support22 engaging edge 10 of projections 9. When a doll is lowered to asitting position, support 22 will always engage edge It first sincethere is a cut-away 37 at that point of engagement on support 21. Thus,pins 20 Will be cammed downwardly. Obviously crank pin 19, under thiscircumstance, must move upwardly, and is allowed to do so since theforward lower edge of the leg support 21 is cut away as at 37 to permitthe upward movement of support 21 under the influence of downwardmovement of leg support 22.

FIGS. 6, 7 merely show economical and practical structure for securingthe leg supports 21, 22 to the legs. The legs may be of conventional,semi-rigid plastic material formed with upwardly opening sockets 38 inwhich the lower portion of each rigid leg support (or 21) is fitted, anda pin 39 may secure each support in the socket, or they may be cementedin place, if desired, so as to be integrally connected with the legs.

Also seen in FIGS. 6 and 7 is a substantially horizontal groove 31extending for a distance around leg 2, it being understood that asimilar groove is so located on the inner side of leg 3. This groove isadapted to receive an elasticized or drawstring tightened pantie leg orthe like therein to prevent said pantie leg from riding up over theedges of the legs and exposing and possibly becoming entangled in thewalking mechanism.

In FIG. 8 a modification of the leg supports is shown in which theprojections 26 each project into a straight vertical slot 40 formed inthe upper end portion of each leg support 43, thus providing a camsurface 42 opposite to a cam surface 43. The surface 43 corresponds tocam surface 27.

A doll provided with this structure cannot be seated without theaddition of leg hinges or the like, but it can be walked backwards,which cannot be done with the doll hereinbefore described. It alsohastens the step and permits walking downhill. The cam surface 42 oneach support performs the same function as cam surface 43 when the legsmove in a direction opposite to the direction in which they move whenthe doll is Walked in a forward direction.

FIG. 9 illustrates a walking animal having two front legs 44 and tworear legs 45. They operate in the same manner as the legs of the walkingdoll, but in this instance the front and rear legs are secured to legsupports 46 (FIG. 11) that, in turn, are inside the body 47 and whichsupports are rigidly connected with the legs by pins 48. These pinsextend through circular openings 49 formed in the sides of the body(FiG. 11). The lateral outer flat sides of body 47 extend convergentlydownwardly and the adjacent surfaces of the legs 44, have surfacesrespectively parallel to the sides of body 47, and with thisarrangement, the crank shaft 50 is flexible, so that its ends may beperpendicular to the flat, adjacent surfaces of the body and legs andwith the leg supports 4-6, which are parallel with said surfaces.

A saddle member 52 is within body 47 rigid therewith and has centralbearings 53 in which the central portion of each shaft 56 is rotatable,and a sprocket gear 54 or the equivalent, is secured on each shaft 50between bearings 53. A sprocket chain 55 (FiGS. 10, 11) connects thesprocket wheels so the shafts 50 will rotate together and in properrelation.

The sides 56 of saddle member 52 are adjacent the sides of body 47 androtatably support the ends of shafts 5%, while a crank is secured on theend of each shaft in positions between the sides of the saddle member 52and the sides of body 47. These cranks have oppositely disposed crankpins 57 that rotatably extend into the leg supports for effecting themovement of said legs in exactly the same manner as legs 1, 2 of thedoll are moved when the latter is moved. Projections 58 (FIGS. 10, 11)slidably engage the forward cam surfaces 59 of supports 46 to controlthe swinging of the legs.

If desired, coil springs or rubber bands 60 (FIG. 10) may berespectively connected with the leg supports 46 and the body toyieldably hold the cam surfaces 59 on said supports against projections58, and this structure may be employed with the doll, if desired. Itprovides a slightly faster action of the legs during a walking operationand helps turn the crank when the forward leg is in the most forwardposition. Less tension is on the rear leg.

The crank pins on the forward shaft 50 are preferably offset so that theforward leg 44 on each side will swing oppositely to the rear leg 45 onthe same side when the animal is moved forwardly, and a stick 62 may beconnected with the back of body 47 (FIG. 11) at the most suitable pointto assist in supporting the dog, while the child is in a standingposition, and for moving the animal forwardly.

As indicated in the drawings, the center of gravity of the doll body ispreferably at a point that is rearwardly of the crank shaft. Thislessens any tendency for the body to fall forwardly during manipulationof the doll; therefore makes it easier to move the doll properly in awalking operation.

It should be noted that the arrangement of the crank shaft and legs, asillustrated, is such that as soon as the downwardly moving, forwardlyswung foot contacts the ground or supporting surface, as the operatorpushes the doll forwardly, the crank shaft is in a position to continueits rotation, rather than to reverse the direction of its movement. Thisis important.

The invention as shown and described herein is illustrative of theinvention, but it is to be understood that the invention, as hereafterclaimed, may include other constructions, arrangements of parts, detailsand features.

For example, the entire body of a doll, including the walking mechanismcould be covered with a skin-like plastic or fur-like covering tocompletely hide the walking mechanism and simulate natural bodycovering, said covering being so constructed as to allow for freedom ofmotion of the moving parts of the doll.

Further, in the mechanism described in FIGS. 1-7, in order to provide adoll that could easily walk downhill, at least the upper portions of legsupports 21, 22 could be made of magnetically attracted metal and thepin 25, or similar camming member, could be in the form of a permanentmagnet, which structure would yieldably urge the leg supports to theposition of FIG. 3 and at the same time allow the legs to be moved tothe sitting position of FIG. 5.

Other modifications of the walking mechanism described are illustratedin FIGS. 12-14.

In FIGS. 12 and 13 a leg carrying member 70, similar to member 7 in FIG.3, is used to support leg structure 71, 72 by means of crank pin 73.

The opposed arms of cranks 73 may be recessed in a counterbore 74.

A rod 75 may extend through carrier and the projecting ends of said rodserve as camming members for engagement with the forward cammingsurfaces 76, 77 of the upper ends of leg structures 71, 72 respectively.

In the construction of dolls having a walking mechanism such as thatdescribed in FIGS. 12-14 wherein the cam surfaces on the upperextensions of the leg members are straight, it may be desirable toposition the rod or stop member 83 sufficiently forwardly of thehorizontal axis of rod 73 to allow both legs 71 and 72 to assumesubstantially vertical, substantially parallel, positions relative toeach other when the doll is lifted from the surface over which it may bewalked and the legs are hanging freely. The effect of offsetting thecamming or stop members forwardly of the horizontal axis of cam shaft 73is accomplished in the devices of FIGS. 1-7 by having the cammingsurfaces receding away from the stop members. Thus in both devices,whenever a doll is lifted free from the surface over which it may bemoved, both legs will hang together beneath the body of the device andone foot will always be in an operative position to initiate walkingmotion when the device is again moved into contact with a walkingsurface.

Movement limiting means 80 are provided for limiting the movement of thelegs in a clockwise direction as seen in FIGS. l2, 13 when a dollcontaining the walking mechanism of said figures is placed in a seatedposition.

As previously described, the Walking-seating mechanism of the presentinvention includes means for equalizing the length of the legs when adoll is seated by moving 7 the pins supporting said legs into generallyvertical alignment (FIG. 5).

In the forms of the invention illustrated in FIGS. 3 through 11, a notch(such as 37) in the forward surface of one of the leg structures allowedthe other leg structure to contact a movement limiting member before thenotched leg thereby cranking the notched leg upwardly and evening thelength of the legs.

In the form of the invention illustrated in FIG. 12, the same result isaccomplished by making the shoulder 81 of one of members 80 lower thanthe shoulder 82 on the other member 80. Thus, leg 72 will contactshoulder 81 before leg 71 contacts shoulder 82 when a doll is seated andthe pins supporting legs 71 and 72 will be cranked into generallyvertical alignment with the pin supporting leg 71 uppermost.

FIG. 13 illustrates how the leg structure in the present walking-seatingmechanism can be moved independently of each other to perform limitedacrobatics. By applying extra force to the leg 72 which is in frictionalcontact with a floor, the opposed leg 71 can be moved forward with extraspeed and since the camming surface 7 6 thereof is free fordisengagement from camming member 75 the leg 71 can generate sufficientmomentum to swing forward and simulate a kick or dance step. It shouldalso be obvious that as a doll incorporating the present walkingmechanism is propelled at a faster than normal speed, the leading legwill kick forward somewhat lengthening the stride just as in a humanstride at a faster pace.

It should also be understood that the configuration of camming member 75can be in various forms. In FIG. 14 an equivalent of camming member 75is illustrated at 83 and is formed integrally with the leg carryingmember 84.

Carnming member 83 may provide more than one point of contact for thecamming surface 85 of a leg structure 86. The solid line representationof leg structure 86 illustrates contact between the upper extremity ofsaid leg and camming member 83. The dot-dash line position 89illustrates the contact between camming member 83 and the cammingsurface 85 of leg 86 with said leg near its forwardmost position.

Variations in the configuration of its camming member 83 can be used toproduce irregular motions in the leg movement of a doll. The particularform illustrated in FIG. 14 may provide particularly good results wherea kicking motion is desired.

We claim:

1. In a walking device having a body and a pair of generally verticallyextending legs depending therefrom:

(a) revolvable means rotatably carried by said body for movement arounda horizontal axis including horizontal pins pivotally supporting saidlegs from points spaced below their terminating upper ends providingupper end portions above said pins and said pins being spaced atopposite sides of said horizontal axis for simultaneous movement of saidupper end portions in the same direction in horizontally spaced,generally vertically disposed circular paths upon rotation of saidrevolvable means whereby the upper end of one leg will besuccessively'moved upwardly, forwardly, downwardly and rearwardly and atthe same time the upper end of the other leg will be successively moveddownwardly, rearwardly, upwardly and forwardly relative to the directionin which said device is moved;

(b) control means respectively on said body and on said legs includingstationary camming members on said body and a cam surface on the forwardedge of each ofsaid upper end portions in cooperatively slidableengagement during the circular movement of said upper ends of said legsfor effecting a swinging of the lower end portion of each leg forwardlyrelative to the direction in which said device is moved;

(c) said upper end portion of said legs being free for rearward swingingof said upper end portions and for forward swinging of said lower endsof said legs about said horizontal pins independently of said controlmeans to positions of said legs extending horizontally relative tovertical to enable seating said device on said floor.

2. In a structure as defined in claim 1:

(d) means respectively on said legs and said body being engageable uponswinging said legs to said horizontal position for moving saidhorizontal pins into substantially vertical alignment in a substantiallyvertical plane whereby the terminating lower ends of said legs in saidhorizontal positions will be even.

3. In a walking device having a body and a pair of generally verticallyextending legs depending therefrom:

(a) revolveable means rotatably carried by said body for movem nt arounda horizontal axis including horizontal pins pivotally supporting saidlegs from points spaced below their terminating upper ends providingupper end portions above said pins and said pins being spaced atopposite sides of said horizontal axis for simultaneous movement of saidupper end portions in the same direction in horizontally spaced,generally vertically disposed circular paths upon rotation of saidrevolvable means whereby the upper end of one leg will be successivelymoved upwardly, forwardly, downwardly and rearwardly and at the sametime the upper end of the other leg will be successively moveddownwardly, rearwardly, upwardly and forwardly relative to the directionin which said device is moved;

(b) control means respectively on said body and on said legs includingstationary camming members on said body and a cam surface on the forwardedge of each of said upper end portions in cooperatively slidableengagement during the circular movement of said upper ends of said legsfor effecting a swinging of the lower end portion of each leg forwardlyrelative to the direction in which said device is moved;

(0) means connected to said body and in effective engagement with eachof said legs for yieldably urging said legs in a rearward directionrelative to the direction in which said device is moved.

4. In a walking device having a body and a pair of generally verticallyextending legs depending therefrom:

(a) revolvable means rotatably carried by said body for movement arounda horizontal axis including horizontal pins pivotally supporting saidlegs from points spaced below their terminating upper ends providingupper end portions above said pins and said pins being spaced atopposite sides of said horizontal axis for simultaneous movement of saidupper end portions in the same direction in horizontally spaced,generally vertically disposed circular paths upon rotation of saidrevolvable means whereby the upper end of one leg will be successivelymoved upwardly, forwardly, downwardly and rearwardly and at the sametime the upper end of the other leg will be successively moveddownwardly, rearwardly, upwardly and forwardly relative to the directionin which said device is moved;

(b) control means respectively on said body and on said legs includingstationary camming members on said body and a cam surface on the forwardedge of each of said upper end portions in cooperatively slidableengagement during the circular movement of said upper ends of said legsfor effecting a swinging of the lower end portion of each leg forwardlyrelative to the direction in which said device is moved;

(c) said cam surface on each upper end portion having predeterminedcurvature means for effecting a swinging of the lower end portion ofeach leg forwardly relative to the direction in which said device ismoved only during said forward movement of the upper end portion of eachleg when the said horizontal pins included in said revolvable means isat the upper portion of the circular path thereof and is moving for- 913.0 wardly whereby the leg so swinging will clear the 3,228,143 1/ 1966Kaplan 46-149 floor when the lower end of the other leg is in engage-3,267,607 8/ 1966 Ryan 46-150 ment with the floor. FOREIGN PATENTSReferences Cited 5 561,016 7/ 1923 France. UNITED STATES PATENTS 344,9404/ 1960 swltzerland.

801,668 10/1905 Lehmann 46l49 RICHARD C. PINKHAM, Primary Examiner.1,599,290 9/1926 Sato 46-449 V 99 3 19 1 Beebe 4 4 ANTON OECHSLE,Exammer- 3,210,886 10/ 1965 Glass et a1 46--149 10 L. I. BOVASSO, T.ZACK, Assistant Examiners.

1. IN A WALKING DEVICE HAVING A BODY AND A PAIR OF GENERALLY VERTICALLYEXTENDING LEGS DEPENDING THEREFROM: (A) REVOLVABLE MEANS ROTATABLYCARRIED BY SAID BODY FOR MOVEMENT AROUND A HORIZONTAL AXIS INCLUDINGHORIZONTAL PINS PIVOTALLY SUPPORTING SAID LEGS FROM POINTS SPACED BELOWTHEIR TERMINATING UPPER ENDS PROVIDING UPPER END PORTIONS ABOVE SAIDPINS AND SAID PINS BEING SPACED AT OPPOSITE SIDES OF SAID HORIZONTALAXIS FOR SIMULTANEOUS MOVEMENT OF SAID UPPER END PORTIONS IN THE SAMEDIRECTION IN HORIZONTALLY SPACED, GENERALLY VERTICALLY DISPOSED CIRCULARPATHS UPON ROTATION OF SAID REVOLVABLE MEANS WHEREBY THE UPPER END OFONE LEG WILL BE SUCCESSIVELY MOVED UPWARDLY, FORWARDLY, DOWNWARDLY ANDREARWARDLY AND AT THE SAME TIME THE UPPER END OF THE OTHER LEG WILL BESUCCESSIVELY MOVED DOWNWARDLY, REARWARDLY, UPWARDLY AND FORWARDLYRELATIVE TO THE DIRECTION IN WHICH SAID DEVICE IS MOVED; (B) CONTROLMEANS RESPECTIVELY ON SAID BODY AND ON SAID LEGS INCLUDING STATIONARYCAMMING MEMBERS ON SAID BODY AND A CAM SURFACE ON THE FORWARD EDGE OFEACH OF SAID UPPER END PORTIONS IN COOPERATIVELY SLIDABLE ENGAGEMENTDURING THE CIRCULAR MOVEMENT OF SAID UPPER ENDS OF SAID LEGS FOREFFECTING A SWINGING OF THE LOWER END PORTION OF EACH LEG FORWARDLYRELATIVE TO THE DIRECTION IN WHICH SAID DEVICE IS MOVED; (C) SAID UPPEREND PORTION OF SAID LEGS BEING FREE FOR REARWARD SWINGING OF SAID UPPEREND PORTIONS AND FOR FORWARD SWINGING OF SAID LOWER ENDS OF SAID LEGSABOUT SAID HORIZONTAL PINS INDEPENDENTLY OF SAID CONTROL MEANS TOPOSITIONS OF SAID LEGS EXTENDING HORIZONTALLY RELATIVE TO VERTICAL TOENABLE SEATING SAID DEVICE ON SAID FLOOR.